In the high speed target environment,there exists serious Doppler effect in the low pulse repetition frequency（LPRF） modulated frequency stepped frequency（MFSF） radar signal.The velocity range of the target is lar...In the high speed target environment,there exists serious Doppler effect in the low pulse repetition frequency（LPRF） modulated frequency stepped frequency（MFSF） radar signal.The velocity range of the target is large and the velocity is high ambiguous,so the single method is difficult to satisfy the velocity measurement requirement.For this problem,a novel method is presented,it is a combination of cross-correlation inner frame velocity measurement and range-Doppler coupling velocity measurement.The cross-correlation inner frame method,overcoming the low Doppler tolerance of the cross-correlation between frames,can obtain the coarse velocity of the high speed target,and then the precision velocity can be obtained with the range-Doppler coupling method.The simulation results confirm the method is effective,and also it is well real-time and easy to the project application.展开更多
为了测试新型高功率速调管,开展了高功率连续波脉冲步迹调制(PSM)高压电源的研制工作。介绍了电源系统的主要指标和工作原理,对电源核心部件多绕组变压器进行了建模仿真并对其分布电容储能情况进行了分析,阐述了PSM模块的设计方法和电...为了测试新型高功率速调管,开展了高功率连续波脉冲步迹调制(PSM)高压电源的研制工作。介绍了电源系统的主要指标和工作原理,对电源核心部件多绕组变压器进行了建模仿真并对其分布电容储能情况进行了分析,阐述了PSM模块的设计方法和电源控制系统及其控制策略等关键技术问题。描述了速调管快速保护电路的设计和功能,结合熔丝短路试验对保护效果进行了评估。在额定负载条件下,测试了电源输出特性并给出了有关波形,电源输出达到75 k V/20 A,电压纹波<1%,打火保护速度<10μs。试验证明该电源设计合理可靠、运行稳定,可以用于速调管测试。展开更多
文摘In the high speed target environment,there exists serious Doppler effect in the low pulse repetition frequency（LPRF） modulated frequency stepped frequency（MFSF） radar signal.The velocity range of the target is large and the velocity is high ambiguous,so the single method is difficult to satisfy the velocity measurement requirement.For this problem,a novel method is presented,it is a combination of cross-correlation inner frame velocity measurement and range-Doppler coupling velocity measurement.The cross-correlation inner frame method,overcoming the low Doppler tolerance of the cross-correlation between frames,can obtain the coarse velocity of the high speed target,and then the precision velocity can be obtained with the range-Doppler coupling method.The simulation results confirm the method is effective,and also it is well real-time and easy to the project application.
文摘为了测试新型高功率速调管,开展了高功率连续波脉冲步迹调制(PSM)高压电源的研制工作。介绍了电源系统的主要指标和工作原理,对电源核心部件多绕组变压器进行了建模仿真并对其分布电容储能情况进行了分析,阐述了PSM模块的设计方法和电源控制系统及其控制策略等关键技术问题。描述了速调管快速保护电路的设计和功能,结合熔丝短路试验对保护效果进行了评估。在额定负载条件下,测试了电源输出特性并给出了有关波形,电源输出达到75 k V/20 A,电压纹波<1%,打火保护速度<10μs。试验证明该电源设计合理可靠、运行稳定,可以用于速调管测试。
